https://en.wikipedia.org/wiki/Nabataean_alphabet
The Nabataean alphabet is an abjad (consonantal alphabet) that was used by the Nabataeans in the second century BC. [2] [3] Important inscriptions are found in Petra (now in Jordan ), the Sinai Peninsula (now part of Egypt ), and other archaeological sites including Abdah (in Israel ) and Mada'in Saleh in Saudi Arabia.